Abstract
Coadsorption of methyl-substituted cyclohexanes and CO has been investigated by temperature-programmed desorption (TPD). Coadsorbed CO promotes decomposition of cyclohexanes. Decomposition fraction (ratio of decomposed molecules to adsorbed ones) of cyclohexanes was determined with changing coverages of CO and cyclohexanes. Decomposition fraction increases sharply when a tertiary C-H bond is introduced into a cyclohexane ring by methyl substitution. This is consistent with the fact that dissociation energy of a tertiary C-H bond is smaller than those of primary and secondary C-H bonds.
| Original language | English |
|---|---|
| Pages (from-to) | 592-595 |
| Number of pages | 4 |
| Journal | Applied Surface Science |
| Volume | 121-122 |
| Publication status | Published - 1997 Nov |
| Externally published | Yes |
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Keywords
- CO
- Coadsorption
- Promoting effect on decomposition
- Stepped surface
- Temperature-programmed desorption
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Condensed Matter Physics
Cite this
Coadsorption of cyclohexanes and CO on Ni(755) : Promoting effect of CO and increase of decomposition fraction by methyl substituent. / Orita, Hideo; Kondoh, Hiroshi; Nozoye, Hisakazu.
In: Applied Surface Science, Vol. 121-122, 11.1997, p. 592-595.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Coadsorption of cyclohexanes and CO on Ni(755)
T2 - Promoting effect of CO and increase of decomposition fraction by methyl substituent
AU - Orita, Hideo
AU - Kondoh, Hiroshi
AU - Nozoye, Hisakazu
PY - 1997/11
Y1 - 1997/11
N2 - Coadsorption of methyl-substituted cyclohexanes and CO has been investigated by temperature-programmed desorption (TPD). Coadsorbed CO promotes decomposition of cyclohexanes. Decomposition fraction (ratio of decomposed molecules to adsorbed ones) of cyclohexanes was determined with changing coverages of CO and cyclohexanes. Decomposition fraction increases sharply when a tertiary C-H bond is introduced into a cyclohexane ring by methyl substitution. This is consistent with the fact that dissociation energy of a tertiary C-H bond is smaller than those of primary and secondary C-H bonds.
AB - Coadsorption of methyl-substituted cyclohexanes and CO has been investigated by temperature-programmed desorption (TPD). Coadsorbed CO promotes decomposition of cyclohexanes. Decomposition fraction (ratio of decomposed molecules to adsorbed ones) of cyclohexanes was determined with changing coverages of CO and cyclohexanes. Decomposition fraction increases sharply when a tertiary C-H bond is introduced into a cyclohexane ring by methyl substitution. This is consistent with the fact that dissociation energy of a tertiary C-H bond is smaller than those of primary and secondary C-H bonds.
KW - CO
KW - Coadsorption
KW - Promoting effect on decomposition
KW - Stepped surface
KW - Temperature-programmed desorption
UR - http://www.scopus.com/inward/record.url?scp=0031549853&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031549853&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031549853
VL - 121-122
SP - 592
EP - 595
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -